Southern Catalpa (Catalpa bignonioides): Essential Guide Northern Catalpa Ohio Department of Natural Resources In autumn, mature catalpa seed pods turn brown and often hang on the tree through late fall and into winter. Today's @marthastewartblog looks at some of the seeds, berries, and cones of Northern catalpa Catalpa speciosa The Morton Arboretum Indian bean tree (catalpa tree) bean uses? : r foraging